Mechanical thrombectomy for middle cerebral artery M2 occlusions.

Background: The safety and efficacy of mechanical thrombectomy (MT) for proximal large vessel occlusion after acute ischemic stroke (AIS) have been demonstrated. Clinical investigations of endovascular approaches for treating AIS due to M2 occlusions have been ongoing.

Purpose: To assess the outcomes of M2 occlusions according to treatment modality and anatomical division.